Śrīla Prabhupāda writes: “It may be noted that by dispatching his younger brothers to conquer in different directions, King Yudhiṣṭhira did not actually intend that they declare war with the kings. Actually, the brothers started for different directions to inform the respective kings about King Yudhiṣṭhira’s intention to perform the Rājasūya sacrifice. The kings were thus informed that they were required to pay taxes for the execution of the sacrifice. This payment of taxes to Emperor Yudhiṣṭhira meant that the king accepted subjugation before him. In case of a king’s refusal to act accordingly, there was certainly a fight. Thus by their influence and strength, the brothers conquered all the kings in different directions, and they were able to bring in sufficient taxes and presentations. These were brought before King Yudhiṣṭhira by his brothers.”